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EP 2 845 349 A1

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(43) Date of publication: 11.03.2015 Bulletin 2015/11 (21) Application number: 12875912.3 (22) Date of filing: 30.04.2012

(51) International Patent Classification (IPC):  H04L 12/26(2006.01) H04L 12/22(2006.01) H04L 12/70(2013.01) (86) International application number: PCT/US2012/035883 (87) International publication number: WO 2013/165368 (07.11.2013 Gazette 2013/45)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (71) Applicant: Hewlett-Packard Development Company, L.P. Houston, TX 77070 (US)	(72) Inventors: SANCHEZ, Mauricio Roseville, California 95747 (US) CHIU, Jechun Austin, Texas 78728 (US) CLARK, Charles F. Roseville, California 95747 (US) (74) Representative: EIP  Fairfax House 15 Fulwood Place London WC1V 6HU London WC1V 6HU (GB)